These with the C cups are the best and less expensive upgrade you can do to strengthen the front end of your AX10. true you have to buy the bolts (3mm X 10MM) and a little bit of lock tight when installing these fine upgrades...yet putting parts together is the most fun of the hobby... if you don't understand this fact... you don't belong in this hobby. I get so tired of others who simply do not understand what this hobby is all about... and complain because of their own misunderstandings.)